I hate to be blunt: But Vlad is shot for the season. Seriously, if you hold out hope that he is going to carry you at some point this year, you will be terribly disappointed.
Herniated discs ARE chronic problems -- absent surgically repairing them. And so far, no word has been given that this will be done. And even if it was done, that would put him on the shelf until next season.
Obviously, nothing is absolute here. Exceptions to rules do exist. But if you want to play the odds, abide by this simple rule:
**Do NOT gamble on players with herniated discs. The deck is so heavily stacked against players with this injury, in year one, that it's not worth the risk.**
After all, the only guy in recent memory who has shown any ability to play through this injury without a big dropoff is A-Rod, and it's still too early in the season to reach a conclusion.
So do what every fantasy manager should do: Play the odds. Don't gamble on rare exceptions.